Institute of Particle and Nuclear Studies
High Energy Accelerator Research Organization

ut stella

IPNS Illuminates the "Unknown" like Stars

Multilateral research spanning from the microscopic world to the universe.

The Institute of Particle and Nuclear Studies (IPNS) is a research institutionthat advances our understanding of the physical world from microscopic particles to the whole universe,
by developing theories and performing cutting-edge experiments.

ATLAS

★

IPNS’s organizational structure, made up of five distinct fields of research, resembles a constellation of stars.

EnergyFrontier

It was once thought that atoms were the smallest building blocks of matter.

Next Generation Collider★

It eventually became known that atoms consist of a nucleus and electrons.
Furthermore, the nucleus is made up of protons and neutrons, which are in turn composed of quarks.
At present, the quarks and leptons (of which the electron is one) are considered to be the fundamental particles

KISS exp.

★

– the smallest building blocks of matter.

Hadron exp.

★

We know of four forces acting on these fundamental particles: gravitational, electromagnetic, strong, and weak.
The electromagnetic, strong, and weak forces are understood to be transmitted by gauge bosons, a separate class of particles.
Finally, the Higgs boson plays a central role in giving mass to these particles.

HadronNuclearPhysicists have spent over a century developing the 'Standard Model of Particle Physics' that encompasses these concepts.

TheoryAbout 13.8 billion years ago, the universe was incredibly hot and filled with particles which we have not yet discovered.
As the universe expanded and cooled, protons, neutrons, and eventually atomic nuclei, atoms, and matter formed.
Unraveling the microscopic world of particles and atomic nuclei means exploring the history of the universe itself.
At IPNS, we pioneer new theories of nature, and test them through experiments.

KOTO

COMET

★

If devices needed to carry out these experiments do not exist,★

LiteBIRD

we innovate and create our own, with the aim to unveil the laws of physics that connect everything from particles to the universe.

★

Muon g−2/EDM

ut stella—Like stars, IPNS continues to illuminate the unknown.

★

*[ut stella ] in Latin translates to "like a star"

UCN

Belle II★★

Cover Visual

An illustration depicting particle tracks from particle reactions captured by KEK's bubble chamber. The equations represent “Einstein's
equations of gravity” and “equations of the electromagnetic, strong, and weak forces acting on particles.”FlavorPhysics★

T2K & Hyper-K

Particle
Astrophysics★

★ Energy Frontier

Exploring the new physics at unprecedented energies.

★ Hadron Nuclear

Exploring the nature of atomic nuclei and the 'strong force' which binds them.

★ Flavor Physics

Searching for new laws of physics by precisely studying properties and interactions of particles.

★ Particle Astrophysics

Exploring space observation through particle physics.

★ Theory

Conducting fundamental theoretical research into particle and nuclear physics.

[IPNS: Institute of Particle and Nuclear Physics] The logo shows“IPNS”, the Institute’s abbreviation. The ellipse with an “i” dot represents both anelectron in an atom and a particle accelerator or collider, while the “P” and “N” are woven together, as are the fields of particle and nuclear physics.

Hadron Nuclear

Flavor Physics

Belle II Experiment

Inside the Belle II Detector
Secondary particles produced in decays, such as electrons, photons, muons,pions, kaons and protons, are measured precisely with these detector
components.

Quest for New Physics
with the World's Highest-Luminosity Accelerator
The Belle II experiment explores new physics phenomena that are the keys to solving the mysteries of the universe. By precisely
studying the decay patterns of particles produced by the SuperKEKB accelerator, in which we produce extremely rare phenomenaof the universe such as the break-down of the particle-antiparticle symmetry, we reveal the nature of yet-unknown new particles
and forces. Our aim is to unveil new laws of physics, which would be a step towards solving the mysteries of the antimatter
disappearance from the universe and the nature of dark matter.

SuperKEKB/Belle II
Super B Factory, a Unique Facility

The ARICH detects Cherenkov photons with accurate position information to identify theparticle type.

SuperKEKB Accelerator– Luminosity World Record Holder

SuperKEKB Accelerator

Belle II Detector

KEK Tsukuba Capmus

The SuperKEKB, a 3-km circumference electron-positron collider, holds thecurrent world record for luminosity (collision performance). Multiple improvements,
including reducing the size of the beam at the collision point and increasing thebeam currents, will allow SuperKEKB to further increase its luminosity, achieving acollision rate tens of times higher than that of the previous KEKB accelerator.

The Mysteries Behind the Disappearance of Antimatter from the Universe
We believe that an equal amount of matterand antimatter were produced by the Big
Bang at the very beginning of our universe.
However, the universe we observe today isfilled only with matter. Physicists think thatthe break-down of charge and parity (CP)symmetry is one of the keys to explain this.
CP symmetry represents that the laws ofphysics are identical for particles that form
matter and antiparticles that form antimatter.
This symmetry is slightly violated, i.e., thelaws of physics differ slightly for particles and5%

Dark matter

The Belle II detector is about 8 m in width and 8 m
in height, with a weight of around 1,400 t. It contains
multiple detector components optimized for various
measurements in a multi-layer cylindrical structurearound the collision point of the SuperKEKB particle
beams. Belle II is an international collaboration ofover 1,100 researchers from 125 universities andresearch institutions in 28 countries and regions,and KEK is the host lab. Belle II is aiming to collect
50 times more data of B-meson decay events thanthe previous Belle experiment.

When a particle and its antiparticle meet, they annihilate
and transform into pure energy.

Unveiling the Nature of Dark Matter

MatterA Large-Scale Detector, Belle-II

antiparticles, as proved by measurements
and described in the Standard Model (SM)of Particle Physics. The Kobayashi-Maskawa(KM) theory, which was proposed in 1973,
explained the mechanism of violation of CP
symmetry. The Belle was built to test the KM
theory in B meson decays and confirmed
it. However, known sources of CP violation
are too small to explain why the antimatter
disappeared, so this remains a major mysteryof particle physics.

27%
Dark energy
68%

According to the latest cosmologicalobservations, the matter described by the SM
constitutes only 5% of the entire universe,
and unidentified dark matter and dark energy
constitute the remaining 95%. We know
nothing about the microscopic nature ofdark matter, except that it is not made of SM
particles. Belle II also focuses on dark matteras one of the main research programs. For
example, a hypothetical particle called a Zprime boson is proposed to extend the SM
as a possible connection between dark andordinary matter. We make every possible
attempt to search for such yet-unknown clues
to dark matter.

Energy Frontier

Energy Frontier

Japan’s Contribution to the ATLAS ExperimentThin gap chamberInteraction
point

Superconducting
toroid magnet (Barrel)

Muon chambers(electronics)

Exploring the Laws of Physics at Unprecedented High Energies
Energy Frontier experiments use high energy accelerators to recreate and measure particles and phenomena that governed the early
universe. The LHC/ATLAS experiment at CERN near Geneva, Switzerland, is now investigating the Higgs boson discovered at the LHC
and searching for new particles.

The ATLAS Experimentat the World’s Largest Particle Collider

Inner detector
Superconducting
toroid magnet (Endcap)

Hadronic
calorimeter

Electromagnetic
calorimeter

Superconducting
solenoid magnet

Detectors shown in red
are Japan's contribution.

Pixel semiconductor detector modules in the innertracker for the HL-LHC experiment will measure charged
particle trajectories with improved precision.

The ATLAS detector consists of various subsystems which measure the large number ofparticles produced in proton-proton collisions.
The ATLAS Japan group plays a crucial role indeveloping, constructing, and operating the innertracker, superconducting solenoid magnet andmuon trigger detector. We have also significantly
contributed to data analyses and resulting physics
achievements, including the Higgs boson discovery.
The LHC is progressing towards High-Luminosity
LHC (HL-LHC), intensifying proton collision rates.
ATLAS Japan leads the upgrade of the innertracker and muon trigger detector electronics toprepare for HL-LHC.

Developing Detectors for the Future Energy Frontier Experiments
Various next-generation experiments are planned
to investigate the energy scale of new physics
unveiled by the LHC and HL-LHC experiments.
The International Linear Collider (ILC) is a primeexample. IPNS-KEK collaborates with domestic andinternational universities and research institutions
to advance detector development for future energy
frontier experiments such as the ILC.

Image ©Rey.Hori/KEK

Approaching Theories of the Origin of the Universe:
Grand Unified Theory and Theory of Everything© 2006-2023 CERN

The LHC (Large Hadron Collider) is the world's
highest energy collider. Interactions at one of thecollision points are observed by the ATLAS detector,
which is 22 m in diameter, 43 m long, and weighs
7,000 t.
ATLAS is operated by an international collaborationof over 5,900 members of 103 nationalities. The

Energy Frontier (EF) Group plays a central role in
ATLAS, from the construction of the detector tophysics analysis.
The LHC, with a circumference of 27 km, is the world's largest
circular accelerator, colliding protons at facilities approximately
100 m below the surface.

What is matter made of? What was theuniverse like right after its birth? Energy
Frontier experiments tackle these questions
experimentally. The discovery of the Higgs
boson at the LHC in 2012 revealed thatparticles gain mass through interactions witha Higgs field that fills the universe. However,the nature of the Higgs boson is still not
well understood, it may hold clues to lawsof physics beyond the Standard Model (SM).
We know that dark matter fills the universe,
but the SM cannot explain it. To unravel such
mysteries, it is crucial to thoroughly study the
Higgs boson to explore higher energy scales
in the search for new physics, and to search
for new particles such as supersymmetricpartners of the SM particles. Future Energy
Frontier experiments will bring us closer
to a 'Grand Unified Theory' that unifies theelectromagnetic, weak, and strong forces, andultimately towards a 'Theory of Everything'that unifies even gravity.

©googemap

Flavor Physics

T2K Experiment
Approaching the Mysteries of Matter andAntimatter in the Universe through Neutrino Oscillations

J-PARC

T2K (Tokai-to-Kamioka) is a long-baseline neutrino-oscillation experiment - neutrinos produced at the Japan Proton Accelerator
Research Complex (J-PARC) in Tokai are observed at the Super-Kamiokande detector 295km away. In 2013, T2K discovered theoscillation of muon neutrinos to electron neutrinos. Since 2014, the experiment has been operating using not only neutrino beams but
also antineutrino beams to examine why the universe is made of matter, and not antimatter.

Tokai
SuperKamiokande

J-PARC
TsukubaTokyo

Super-Kamiokande

Three Types of Neutrinos that Change Into One Another
Neutrinos are electrically neutral particles
which have less than one-millionth themass of electrons and the lightest quarks.
Neutrinos seldom interact with other matter,so we cannot sense them while they arearound us. Hundreds of trillions of neutrinos
emitted from the Sun are passing through ourbodies every second. There are three types(generations) of neutrinos: electron, muon,and tau neutrinos. It is known that the typeof the neutrino changes from one to anotheras the neutrino travels. For example, even if a
100% pure muon neutrino beam is producedb y a n a c c e l e r a t o r, s o m e o f t h e m u o nneutrinos can be observed as tau neutrinos
after they travel over some distance. Thisphenomenon is called "neutrino oscillation".
T2K is studying the full picture of neutrino
oscillations between the three neutrino
generations.

Ve

VμBeam Across JapanVτ
T2K aims to establish neutrino oscillations between thethree neutrino generations.

Challenges to Discover "Violation of CP Symmetry" in Neutrinos
Neutrino beam produced at J-PARC

Neutrinos arriving at Super-Kamiokande
Experimental
Data

Nearly pure muon neutrino beam

Nearly pure muon antineutrino beam

In 2016, T2K observed an indication of adifference in the oscillation probabilities
for neutrinos and antineutrinos at the 90%
confidence level. An asymmetry between
matter and antimatter observed so far inquark sector is not sufficient to explain theorigin of the universe made of matter, andthe asymmetry in neutrino sector would be apossible candidate to explain it. T2K is aiming
to discover the "CP asymmetry" in neutrinos
at a 99.7% confidence level by further
increasing the intensity of the neutrino beam
and increasing the amount of data by a factorof ten.

The majority have changed into tau neutrinos.
A small fraction has become electron neutrinos.

The majority have changed into tau antineutrinos.
A small fraction has become electron antineutrinos.

Expected
number(Assuming no CP
symmetry violation)

Observednumberneutrinos

95.4

108

antineutrinos

19.7

16

The latest T2K results show that the appearance ofelectron neutrinos is larger than the expectation in
the case of no CP asymmetry, and the appearance ofelectron antineutrinos is smaller than the expectation
for no CP asymmetry. This discrepancy indicatespossible evidence of CP symmetry breaking.

An electromagnetic horn is a device to focus the neutrino beam in the direction of Super-Kamiokande. The directionof travel of pions which exit the target is bent by a strong magnetic field generated by a pulsed electrical current.
Neutrinos, produced in the decay of pions, are focused in the forward direction. An antineutrino beam can be focused
if the direction of the horn's electrical current is reversed.

A high-intensity neutrino beam is produced at
J-PARC in Tokai, Ibaraki. The beam is sent toKamioka, Hida-city, Gifu 295 km away, and beam
neutrinos are observed by the Super-Kamiokande
detector about one millisecond after the beam
production.
The near neutrino detector at the J-PARC site
observes neutrinos right after neutrino production.
From a comparison of the observations at bothsites, oscillations during the 295-km journey canbe studied. The T2K international collaboration
includes more than 500 researchers from 14
countries.

Near Neutrino Detectors

Near Neutrino Detectors

The near neutrino detectors are installed in anunderground pit in the neutrino monitoring building.
The pit is located 280 m downstream from thetarget, and is 33.5 m in depth and 17.5 m indiameter. There are two independent detectors:
the "INGRID detector", which monitors the stabilityof the neutrino beam direction and intensity, andthe "ND280 detector", which measures the energy
distribution of the neutrino beam and the fraction ofelectron neutrinos in the beam.

Super-Kamiokande
Super-Kamiokande (SK) is a large water Cherenkov
detector located 1,000 m underground in the
Kamioka mine, and is hosted by the Institutefor Cosmic Ray Research, University of Tokyo.
The detector consists of a water tank 39.3 m
in diameter and 41.4 m in height, filled with
50,000 t of ultra-pure water. The water is viewed
by 11,129 highly-sensitive photomultiplier tubes,

which detect Cherenkov radiation—light generated
by neutrino interactions in the water. The data fromphotomultiplier tubes can be used to determine
the type, direction, and energy of the interacting
neutrinos. The detector has been in operation sinceApril 1996, and is continuously observing various
kinds of neutrinos from outer space.

Hyper-Kamiokande
Hyper-Kamiokande (HK) is the next generation
gigantic water Cherenkov detector in Kamioka.
In order to dramatically improve the sensitivityof the search for CP violation and proton decay,
HK is under construction with the aim of starting

observations in 2027. It is planned that HK willobserve the enhanced neutrino beam from J-PARC
with a detector that has eight times the effective
mass of SK and is equipped with newly-developed
high-sensitivity optical sensors.

The new photosensors developed for HK
Provided by: University of Tokyo, Institute for Cosmic Ray Research,
Kamioka Observatory

Hadron Nuclear

Flavor Physics

Research at Hadron Experimental Facility
Origin of the Universe andMatter Investigated Using Various Particle Beams"Hadrons" are types of particles which experience the strong interaction. At the Hadron Experimental Facility (HEF), the origin of matteris investigated on the microscopic scale to answer questions such as: what are the ultimate building blocks of matter? what forcesbind them together? The nuclear force is studied by producing non-standard nuclei including particles other than protons and neutrons.
Experiments are conducted into a wide range of topics in nuclear and particle physics.

Hadron Experimental Facility
Hadron Experimental Hall and South Experimental Building
The Hadron Experimental Hall, 58 m wide and 56 m long, is the central buildingof HEF, and houses the primary proton beamlines that guide the 30 GeV proton
beam from the accelerator, a secondary particle production target, beam dumps,
secondary beamlines, and experimental equipment. Three secondary beamlines— K1.8BR, K1.8, and KL — are currently installed in the A-line, the main
primary proton beamline, each with its own experimental area. Experiments using

primary proton beams are conducted on the high-momentum (“high-p”) B-line at
which a small fraction of the proton beam from the accelerator is extracted andtransported. The C line transports the 8-GeV proton beam from the accelerator to
the Hadron South Experimental Building, where the COMET experiment searches
for muon-electron conversion events.

[KOTO detectors at KL beamline]
KOTO experiment is searching for a decay mode of the neutral K mesonwhich breaks CP symmetry.

Hypernuclei – Into the Unknown Matter World
The nuclei of ordinar y matter on Earthare composed of nucleons (protons andneutrons), however in hadron experiments it
is possible to create "hypernuclei," nuclei that
contain strange quarks, which are not foundin ordinary matter. Nucleons are attracted
to one another and bind together to form
nuclei, but when nucleons are brought evencloser, they feel a strong repulsive force. The
origin of this repulsive force is still unknown.
The study of the properties of hypernuclei is
expected to clarify the nature of the nuclear
force at short distances.
Neutron stars in the universe are made ofextremely dense matter, more than 10 14
times the density of the Sun. "Hyperons,"
particles that contain strange quarks, arethought to exist inside neutron stars. Studying
hypernuclei and hyperons may shed light on
the contents and properties of matter insideneutron stars.

[A new high-resolution spectrometer,
S-2S at K1.8 beamline]
Detectors were set up in front of andbehind the three newly installed large
electromagnets in 2022, aiming toinvestigate the structure of hypernuclei
and interactions affecting hyperons.

Bound quarks

Why are bound quarks haevier?
Mass without Mass Puzzle

K1.8BRKL
high-p

Exploring the Mystery of Hadron Mass

Quark

Free quarks

K1.8

Hadrons are made up of quarks, however the
hadron mass is nearly a hundred times larger
than that of the bare mass of the quarks.
Dr. Yoichiro Nambu proposed a model called“spontaneous chiral symmetry breaking” toexplain this discrepancy. According to thismodel, in a high-temperature, high-density[Curved solenoid at COMET beamline]
COMET explores muon-to-electron
conversion, in which a muon converts toan electron without emitting neutrinos.
Discovering this phenomenon would be aremarkable sign of new physics beyond
the Standard Model.

environment such as the early universe,interaction with surrounding matter is
expected to reduce the number of the socalled quark condensates, resulting in alighter mass. At HEF we create phi mesons
within the nuclei to investigate how theirmass changes under such conditions.

Beyond the Standard Model of Particle Physics
Large quantities of strange quarks andmuons are produced at HEF and they areused to explore physics phenomena thatare expected to occur extremely rarely in

the Standard Model. The KOTO experimentsearches for rare decays of neutral Km e s o n s t h a t b r e a k C P s y m m e t r y. T h e
COMET experiment searches for muon-

electron conversion. These experiments
play a part in the IPNS’s multifaceted
approach to searching for signs of physics
beyond the Standard Model.

[FM Spectrometer at High-p beamline]
Studying the properties of hadrons in nuclei, to explore the origin of
hadron mass.

COMET

Theory

Energy Frontier

Hadron Nuclear

Flavor Physics

Particle Astrophysics

Particle Astrophysics

Theory Center

Experimental Cosmophysics Group

Quest for the Ultimate

Uncovering the Fundamental Laws of Physics in the Universe
Experimentally

What laws govern the universe? How did the universe begin? Various experimental projects at IPNS are dedicated to unraveling thesefundamental questions. Underpinning these projects is theoretical research. What are the laws of particles? What are the propertiesof nuclei? What is the true nature of dark matter? What defines space, time, and quanta? At the Theory Center, through a blend ofexperimental data, mathematics, computational tools, and imagination, we are on the quest for the "ultimate".

The universe began 13.8 billion years ago from a rapid expansion known as "inflation," before the ultra-hot Big Bang. Observationsof the oldest light in the universe, the Cosmic Microwave Background (CMB), are being conducted to seek definitive evidence for thistheory. If we can observe a specific type of polarization mode within the CMB called "degree-scale B-mode polarization," it would
serve as evidence for inflation, marking one of the greatest discoveries in the history of science. The Experimental Cosmophysics
group is dedicated to studying and observing this effect.

Broad Research Fields for
Unraveling Nature's Mysteries[Ground-based Experiment:
POLARBEAR/Simons Array]
Simple mathematical equations can describe thecomplex properties of particles and nuclei aswell as the history of the universe. For instance,
Einstein's theory of relativity stemmed from basic
principles about space and time, yet solving theseequations unveils a wealth of knowledge about
gravity and cosmic laws. The Kobayashi-Maskawa
theory showed that CP symmetry naturally breaks if
elementary particles have three generations. Simple
principles lead to diverse outcomes, and that's why
understanding these principles is vital in theoreticalresearch.
In particle physics, the biggest challenge lies inestablishing theories that go beyond the current
Standard Model of particles. To achieve this, theinitial step is to find clues leading toward a solution.

Observations of CMB polarization are being conductedin the Atacama Desert in Chile, aiming to achieve theworld-highest level of sensitivity for CMB polarization
measurements using a telescope equipped with
detectors based on superconducting technology.
The task is to explore how to verify these clues
through experiments and observations.
Nuclei, which shape today’s universe, consist of
protons and neutrons, but numerous other hadrons
also exist. Researchers delve into the world of
quarks, studying various hadronic substances
produced in accelerators. This exploration ranges
from conditions within neutron stars, where ultrahigh density exists, to the superheated early universe.
Sometimes, simulations with supercomputers areused to comprehend this quark-made world.
The study of particle physics and the universe
are inseparable. Dark matter, firmly inferred fromastronomical observations, challenges the Standard
Model of particle physics. Additionally, the propertiesof particles impact structures beyond galaxies in theuniverse. Exploring concepts like the origin of theuniverse through cosmic theories and superstring
theory might bring scientific answers to such
unfathomable questions.

[Satellite Project: LiteBIRD]
LiteBIRD aims to measure CMB polarization witha sensitivity 100 times greater than prior studies,equipped with a wide-field millimeter-wave
polarimetric telescope carrying space-qualified
superconducting detectors. The goal is to thoroughly
verify the inflationary cosmology.

Flavor Physics

Hadron Nuclear

Wako Nuclear Science Center

Approaching New Physics Laws of Particles through UltraPrecision Measurements

Exploring the Origins of the Elements
Wako Nuclear Science Center (WNSC), located at RIKEN in Wako, Saitama, artificially creates short-lived nuclides by using KISS, aninternationally unique nuclear experimental device developed by KEK and provides them for joint use experiments. Collaborating with
the RIKEN Nishina Center for Accelerator-Based Science, we aim to discover new isotopes and elucidate the origin of heavy elementsin the universe.

KISS is particularly well suited for producing neutronrich, short-lived nuclides, which are the origin ofgold, platinum, and uranium. The newly developed
Multi-Reflection Time-of-Flight (MRTOF) Mass
Spectrographs are used in comprehensive massmeasurement programs to determine the elements’Muon-Neutron Grouporigin, and the mass measurement of the superheavy
elements such as isotopes of nihnium. MRTOF is not
only the basis for the identification of new elements
but will also contribute to the discovery of "islands ofstability," which are much heavier and longer-lived
than the currently known superheavy nuclides.

Internal structure of MRTOF: It enables mass measurement of short-lived nuclides and application to analysis of chemical compounds
in the environment.

In quantum mechanics, various particles briefly appear and disappear under the uncertainty principle, a.k.a. quantum loop effect. The
particles and interactions within these quantum loops contain unknown physical laws not included in the Standard Model. This effectdirectly appears in the anomalous magnetic moment (g-2) and electric dipole moment (EDM).

Muon g-2/EDM Experiment

TUCAN Experiment

The g-2 value has implied deviations fromtheoretical predictions in previous experiments.
The experiment at J-PARC aims to verify these
discrepancies. Using the world's first low emittancebeam of positive muons by adopting muon cooling,
the experiment seeks to measure muon g-2 with a
precision of one part in ten million.

This experiment searches for the neutron EDM by confining
very low-energy neutrons called ultracold neutrons (UCNs)
inside a special bottle and observing their spin precession
in an electromagnetic field with unprecedented precision.
At TRIUMF, Canada's particle accelerator center, theworld's most intense ultra-cold neutron source has been
constructed, aiming to discover the neutron EDM.

The Test Beam Line is designed to provide electron
beams ranging from 0.5GeV to 5GeV for Instrumentation
tests. The operation for the university collaborative users
started in 2023.

International Collaboration and Fostering Next Generations
Collaboration with international researchers is crucial to advancing research on particles, nuclei, and the universe,
through cooperation, leveraging their expertise, and sometimes even competition.
Researchers from the following countries and regions regularly visit IPNS to collaborate on various physics studies and experiments.
IPNS researchers are dedicated to acquiring new knowledge that will become a common property of all humankind
through collaboration and competition with exceptional researchers from around the world.
We are also committed to fostering outstanding researchers who will advance the progress of research in the future.

Europe, Africa and Middle East

Instrumentation Technology Development Center
New Instrumentation Discovers the Unknown
Instrumentation Technology Development Center (ITDC) is a center established for the operation of the Instrumentation Development
Test Beam Line as a hub for the development in various fields and for researcher exchange, working with university collaborative
users. Our goal is to nurture new ideas by facilitating interactions among researchers from a wide range of fields, without confining
it to particle and nuclear physics fields, and to create a place for young researchers with innovative ideas.

Support Experiments and Researches

Cryogenic GroupElectronics System Group

Mechanical Engineering GroupThe group carries out research and development,
and builds and operates instruments related tosuperconductivity and cryogenics.

The group develops and maintains sensors, highly
integrated high-speed signal processing, and a
distributed data processing control system.

The group provides design and technical developmentof various structures such as detectors, test
equipment, and precision assembly mounts.

Safety Group

Computing Research Group

Their mission is to establish safety inthe experimental environment and topromote safety awareness.

The group conducts development,
improvement, and operational
support for computers and software.

Asia and Oceania

Americas

ARMENIALEBANON

AUSTRALIA

AUSTRIANETHERLANDSCANADACHINA

BELGIUM

POLANDMEXICOHONG KONGCZECHIARUSSIA

U.S.A.

INDIA

DENMARKSLOVENIAINDONESIAFINLAND

SPAIN

KOREA

FRANCE

SWEDENMALAYSIAPHILIPPINESGEORGIA

SWITZERLANDGERMANY

TURKEYTAIWANHUNGARY

U.K.

THAILANDISRAELUKRAINEVIETNAMITALYInstitute of Particle and Nuclear Studies, High Energy Accelerator Research Organization
1-1 OHO, TSUKUBA, IBARAKI, 305-0801
https://www2.kek.jp/ipns/en/
2024.03